Our Sigma lens list

The Sigma camera lenses below are the ones we currently have in stock for Canon camera bodies.

About Sigma:

The letters OS stands for Optically Stabilised

DG lenses will work on full frames sensors and cropped sensors, and DC lenses only work fully on cropped sensors.

You can mount a DC lenses on to a full frame camera, however, you will get black arrange the edges of your pictures because the image circle is only designed to fill a cropped sensor.

Sigma EX DC Lenses

10-22mm f/3.5 EX DC

18-250mm f/3.5-6.3 DC OS

Sigma EX DG Lenses

12-24mm f/4.5-5.6 EX DG

24-70mm f/2.8 EX DG

50mm f/1.4 EX DG

50-500mm f/4.5-6.3 DG OS

50-500mm f/4.5-6.3 DG

70-200mm f/2.8 EX DG (cheaper than the Canon equivalent, this is a fantastic lens so don't be put off)

70-300mm f/4-5.6 DG Macro

120-300mm f/2.8 EX DG 

120-400 f/4.5-5.6 DG OS (if the Canon 100-400 is not available this would be my next best choice)

We like to keep our stock fresh and new and we therefore sell on our older lenses, if you would like to be kept informed of what we are selling on please drop us an email on buylenses@lenslocker.co.uk, you may be able to grab yourself some second hand camera lenses at a bargain price.

We also stock Canon and Nikon lenses, look at our lens pages for further details. We are constantly updating our list of lenses so check back regularly. If you are unable to find what you were looking for please let us know as we may be able to get it in given enough notice.

LensLocker Lens Hire London, we also rent out cameras and other photographic equipment such as flashes, tripods, studio lighting, DSLR movie making equipment and filters. Though based in London we can deliver right across the UK.

Our Sigma lenses - Nikon fit

The Sigma camera lenses below are the ones we currently have in stock for Nikon camera bodies.

About Sigma:

OS = Optically Stabilised

DG lenses will work on full frames sensors and cropped sensors, and DC lenses only work fully on cropped sesnors.

You can mount a DC lenses on to a full frame camera, however, you will get black around the edges of your pictures because the image circle is only designed to fill a cropped sensor.

Sigma DC Lenses:

10-20mm f/4-5.6 EX DC
18-250mm f/3.5-6.3 DC OS

Sigma DG Lenses:

12-24mm f/4.5-5.6 EX DG 

24-70mm f/2.8 EX DG (another great lens and a rival for it's Nikon counter part. In a recent review in one of the camera magazines this scored as high is the Nikon version.)

50mm f/1.4 EX DG

50-500mm f/4.5-6.3 DG OS

70-300mm f/4-5.6 DG Macro

120-300mm f/2.8 EX DG (this is a big optic and the lens filter is 105mm!! With it's wide aperture it is great with a Sigma 2x teleconverter (extender) making this lens a 240-600mm beastie)

We like to keep our stock fresh and new and we therefore sell on our older lenses, if you would like to be kept informed of what we are selling on please drop us an email on buylenses@lenslocker.co.uk, you may be able to grab yourself a bargain.

We also stock Nikon and Canon lenses, look at our lens pages for further details. We are constantly updating our equipment (either increasing volumes or broadening our range) so check back regularly. If you are unable to find what you were looking for please let us know as we may be able to get it in given enough notice.

LensLocker Lens Hire London, we also rent out cameras and other photography equipment. Though based in London we can deliver right across the UK.

Our Sigma Lenses - Canon fit

The Sigma camera lenses below are the ones we currently have in stock for Canon camera bodies.

About Sigma:

OS = Optically Stabilised

DG lenses will work on full frames sensors and cropped sensors, and DC lenses only work fully on cropped sesnors.

You can mount a DC lenses on to a full frame camera, however, you will get black around the edges of your pictures because the image circle is only designed to fill a cropped sensor.

Sigma EX DC Lenses

10-22mm f/3.5 EX DC

18-250mm f/3.5-6.3 DC OS

Sigma EX DG Lenses

12-24mm f/4.5-5.6 EX DG

24-70mm f/2.8 EX DG

50mm f/1.4 EX DG

50-500mm f/4.5-6.3 DG OS

50-500mm f/4.5-6.3 DG

70-200mm f/2.8 EX DG (cheaper than the Canon equivalent, this is a fantastic lens so don't be put off)

70-300mm f/4-5.6 DG Macro

120-300mm f/2.8 EX DG 

120-400 f/4.5-5.6 DG OS (if the Canon 100-400 is not available this would be my next best choice)

We like to keep our stock fresh and new and we therefore sell on our older lenses, if you would like to be kept informed of what we are selling on please drop us an email on buylenses@lenslocker.co.uk, you may be able to grab yourself some second hand camera lenses at a bargain price.

We also stock Canon and Nikon lenses, look at our lens pages for further details. We are constantly updating our list of lenses so check back regularly. If you are unable to find what you were looking for please let us know as we may be able to get it in given enough notice.

LensLocker Lens Hire London, we also rent out cameras and other photography equipment. Though based in London we can deliver right across the UK.

File Compression

Many years ago, when I was the cheapest and most inexperienced programmer in a small software house I was given a little boring job. I had to type in a program, written in a book, into a computer. The program was for file compression (LZW). The program was to be used to shrink the size of scanned documents. These were big images and they needed to be small. They needed to be small for two reasons. Firstly they needed to take up less room when stored and the also written and read from storage quickly. Strangely enough compressing and uncompressing a file is much faster than writing or reading an uncompressed file to/from a disk. The same is still true today. Most of the little gadgets in your pocket and also in your home compress and uncompress files for exactly the same reasons.

Compression works by breaking the image down to small chunks with the assumption that there will be many chunks that are identical. That chunk will be stored once and then all the places on the image where the same chunk would be, are stored too. The compressed file would simply be an instruction of how to recreate (uncompress) to a file that was an exact copy of the original. We call this ZIPPING/UNZIPPING.　 If the original file was "uncomplicated" then the compressed file would be very much smaller than the original.

We can make these files more useful by attaching information to file. For example which camera was used and the date that the photograph was taken etc... The most common type of this file is called Lossless TIFF. A Lossless TIFF file can be uncompressed to recreate a exact copy of the original saved image.

If you reduce the detail in an image, for example, the number of colours and resolution of the image then you can easily end up with a file which will compress to a much smaller size. However, you'll never be able to recreate the detail of the original file.

The most common type of this type of file is the JPG. The clever part of making a JPG is to reduce the detail without it being noticeable. This is why its the most popular image file format for the internet.

As photographers we like to use Camera RAW so we don't loose any of the detail within the picture. The problem with this is that as cameras develop and sensors get bigger we not only have to think about the size of our memory card but the amount of storage we need on our PC's! I am currently putting together a blog on storage to take this thread on a step further.

For camera rental and camera lens hire uk choose lenslocker. We are based in London and ship our products country wide. We stock Nikon, Sigma and Canon Lenses amongst other photographic equipment.

We have another blog (Cafetographyhttp://www.cafetography.co.uk) within our website, if you have a spare 5 minutes check it out.

Lenslocker lens hire and camera hire

Do you need a specialist lens for a one-off job? Are you looking to try out a new camera before deciding whether to buy it? LensLocker is the smart way to evaluate the latest and best photography equipment on the market. Photography magazines and review sites can only tell you so much. To determine whether a lens is right for you, you need to be able to test it over an extended period time. Here at Lenslocker you can do just that with our wide range of Nikon, Sigma and Canon lenses and cameras available to hire.

Whether you’re an amateur photographer or a seasoned professional, we’ve got a range of lenses, cameras and accessories to suit your needs. Our hire service enables you to acquire a specific lens for a job or to simply audition a new model that you’ve been eye'ing up without paying top prices. The whole process is beautifully simple – four steps and you’re through! If you would like to experience what a new camera lens can add to your camera, you’ve come to the right place – they’re all stored right here in LensLocker.